Bobbin-winder for sewing-machines.



j w. E. BLAIR. BOBBIN WINDBRIOR SEWING MACHINES. APPLICATION FILED JUNE24, 1910.

v 09 7 Patented Aug. 15,f1911..

2 SHEETSH EET 1.

IIIVVENTOR WM. R. BLfl/Ia WITNESSES:

v A I v v I By fig W W. R. BLAIR.v

BOBBIN WINDBR FOR SEWING MACHINES. APPLIOATION rnmn'nmn 24,1910.

2 SHEETS -SHEET 2.

W/TA/ESSES: lNl/E/VTOI? 2 WM. R. 5mm

A770 IVE) 'PatentedAug. 15, 1911.

UNITED STATES PATENT orr ron.

w'rLLIAIvrn. BLAIR, on ST.- LOUIS, MISSOURI, assrenon r0 Lannie MACHINECOM- PANY, or-s'r." I.oUIs, MISSOURI, A CORPORATION or MISSOURI.

BOBBIN-WINDER Iron SEWING-MACHINES.

art to which it appertalns to make and use the same,-refe rence' beingbad to the accompanying drawings formingpart of this specification, in'which- Figurelis a side, levat-ional view ShQW. ingjmydevice applied tothe standard of a sewing machine. -Fi'g. 2 .is a front elevational viewthereof. fig. 3 is an enlarged view similar co-Fig. .1, with certainparts removed. Figsi. and 5 are detail'views.

This invention-relates to, anew and improved form of bobbin wind'er,which is especially adapted for attachment to the frame of an ordinarysewing. machine, but may or can be used in connection with any machinehaving a rotary element.

The object of my present invention is to provide a simplefrictionallydriven means forrotating the" bobbin as the thread is wound thereupon.

With this object in view my invention consists in the construction,arrangement and combination of the -various parts of my device as are tobe herein" described, and thereafter pointed out in the claims.

Iii-the drawings,- 1 indicates the Ordinary machine frame or standard,and 2 a boss thereon.

3 is a piece attached to and extending from the frame 1, and having aguide roller & at the end thereof. The frame 1 is also rovided with aseat 5 upon which is bolted a bracket 6 having an adjustable bearingpoint 8 mounted in a boss on one end there- In a boss on the bracket thebearing point 8 18 a rotary spin having at one lley 10, and

6 and opposite v end thereof a pu at the other end a shoulder 11 with anopening therein to receive the tapered end of the bobbin, and also a pin12 projecting therefrom for rotating the bobbin 13. Between the bearingpoint 8 and the shoulder 11 is mounted the bobbin 13 which is to beWound. Attached at the points 14 on the bracket 6 is a pivoted weightedthread presser 15 which is shaped in the form of a yoke, as illustratedin dotted lines in Figs.

Specification of Letters-Patent.

on the ley'er .22 is die 9' roll 24: is brought Patented Aug. 15, 1911.

Application filed June 24, 1919. Serial No. 568,730.

1 and 2, the arms-of which are connected to the pivot points 14 on thebracket 6; The body of the yoke piece 15 is made large to have plentyvofweight. 16-isa small flat spring attached tothe frame 1 at 1f(,:andisadapted to be sprung 'out' frorn the frame 1 whenitheyoked piece 15 israised, and forms a holdingdevi'ce to retain the element 15 in thedotted line position shown in Figs. 1 and 2.

'Mounted on a pivot 16" in the lug-2 is a hand lever 17- having atriangular projection thereon at the point '18,. Wherethis leverprojects through the frame- 1 this frame has several notches 19-and 20formed therein in which the projection 18 may be engaged. In proximityto the stud 16 is a stud21 mounted on the lever 17' to form a bearingpoint for lever 22 of L-shape. In one end ofthis lever is-mounted'a'sp'indle 23 having on opposite ends thereof a friction roller 2.4, anda drive -pulley25l Abelt 26 runs aroundfthe pulleys 10 and'25 andmounted a post 27 which is fconnectedwith a post 28-on the lever 17 bymeans of anexp'ansible helical spring 29. Gotiperating with the lever 22is a stop lug 30 on the upper side of the lever 17'."

The operation of the device is as follows:

The thread passes-under the roller 4 to and around the bobbin 13. .Thethreadpresser 1-5 is removed from theholder 16. and is 'held' by.gravity in engagement with the thread inorder to prevent the slack ofthe thread from piling upon the bobbin, and aiiows the thread to beneatly wound in layers thereon. When the operator moves the hand lever17 into the position shown in Fig. 1 the lug 18 is engaged in the lowernotch 19 of the frame-1, due to the. spring action of the lever which ismade ofthin flexible material. By this movement [of the lever 17 thelever 22 is moved downward by means of the spring 29 so that thefrictioninto engagement with the driving wheel 31 of the machine and'isrotated thereby. The rotation of this friction roll 24 operates the belt26 and causes the pulley 10 to rotate which in turn rotates the bobbin13. The spring 29 allows the proper tension of theroller 24 when broughtinto contact with the driving wheel 31. After the bobbin has been fullywound the lever 17 is manually released from the notch 19 in the frame,and moved upward until engage a notch in the for the bobbin,

the projection 18 engages the upper notch 20, in which position the stopis brought into engagement with the lever 22 to remove the roller 24from contact with the drive wheel 31..

';I am aware that minor changes in the rmnstructlon, arrangement andcombination of the various parts of my improved device can be made andsubstituted for those hereinshown and described without departing from"the .nature and spirit of my invention, the scope of-which is indicatedby the 2110- companying claims.

claim v:

1. A bobbin winder comprising a support for the bobbin, a rotary elementconnected thereto, a. lever, a driving mechanism mounted thereon andoperatively connected to the rotary element, said lever being providedwith a projecting portion adapted to hold the lever in operativeposition.

2. A bobbin Winder comprising a frame, a support for thebobbin mountedon the frame having a rotary element connected thereto, a, hand leverpivoted to the frame,

and a second; lever pivoted to the hand-lever having adrlvingmechanismmounted there- 4. ,A bobbin winder comprising a support I 4 for thebobbin,

a rotary element connected thereto, a lever machine and having a stoplug thereon, a

bobbin support to pivoted to the frame of the second lever pivoted tothe first lever, anu

having a driving mechanism mounted thereon, operatively connected tothefrotary element', and a spring connected to both levers.

' 5.. A bobbin winder, comprising asupport for the bobbin, a. rotaryelement connected thereto, a shaft, a driving-wheeland a friction Wheelmounted thereon, a belt connection between the driving wheel and thero-, tary element, and meansfor moving said shaft to bring'thefriction'wheelinto contact with a driving mechanism, I

6. A bobbin Winder comprising a frame, a support forthe bobbin mountedon the frame,a rotary element eonnected to the support, driving meansmounted on the frame, a lever pivoted to the frameabove said drivingmeans, operating means on the lever connected to means on the leveradapted to retain the lever with the operating means in contact with thedriving means or out of contact therewith.

7. A bobbin Windercomprising a frame, a

support for the bobbin mounted thereon, a

rotary elementconnected to the support, driving means mounted on theframe, a lever pivoted to the frame above said drivconnected to therotary element, and a projection on the lever adapted to engage notcheson the frame to retain the lever with the operating means in contact orout of contact with the driving means.

In testimony Whereo I hereunto aflix my signature in the presence of twoWitnesses, this 21st day of June, 1910.

WILLIAM R. BLA'iR.

- Witnesses:

] M. P. SMITH,

J W. Curr.

the rotary element, and

mg means, operating means on the lever

